You'll be offered a reroute or refund, I was offered a reroute on BA (basically confirmed my previous call earlier today) I did ask for other options but they couldn't offer any so I declined and took a refund instead.

Now I'll be cancelling my overall trip, partly due to EK being a £1k more and partly due to colleagues not being able to get to Dubai or are being asked to leave within 14 days as they're Qatari which I now feel bad about considering I focused on flights and they're potentially losing a lot more due to this situation.